Improved machine for making drain-tiles



UNITED STATES PATENT OFFICE.

THOS. A. COLLINS, JOSIAH D. EVANS, AND THOS. J. SMEDLEY, OF SMYRNA,

DELAWARE.

IMPROVED MACHINE FOR MAKING DRAIN-TILES.

Specification forming part of Letters Patent No. 50,097, dated September 26, 1865.

To all whom it may concern:

Be itknown that we, THOMAS A. COLLINS, J osrAH-D. EVANs, and THoMAs J. SMEDLEY, ot' Smyrna, in the county ot Kent and State ot' Delaware, have invented a new and Improved Machine for Making Drain-Tiles; and wc do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part ot' this specification, in which- Figure l represents a Vlongitudinal vertical section of this invention, the line x Fig. 2, indicating the plane of section. Fig. 2 is a horizontal section of the same, the plane ot' section being indicated by the line y y, Fig. l. Fig. 3 is an inside elevation ot' the front plate detached.

Similar letters of reference indicate like parts.

Thisinvention relates to atile-machine which is provided with two plungers. rlhese plungers work in suitable chambers under the mixer, and motion is imparted to them by a doublecrank shaft, the cranks of which are placed in opposite directions, causing one plunger to recede while the other advances, and vice versa, in such a manner that the strain on the. machine is reduced without reducing the quantity of work produced.

rlheA end plate of the chambers or barrels which contain the plun gers are perforated with openings corresponding to the form ot' tile to be produced, and the centers or cores of these holes are supported by cross-bars or bridgepieces, which are secured edgewise to the inner surfaces of said end plates. By having these bridge-pieces placed edgewise, the clay after having` passed the same closes up again, and the tiles produced present an unbroken surface all round. The mixing-arms are cast in sections, each arm being provided with its separate hub, so that the saine can be readily removed, one independent of the other, whenever it may be desirable, for the purpose of repairing, sharpening, or replacing one of said arms.

A represents a frame, made of wood or any other suitable material of sufficient strength for the occasion. One end ot this frame forms the bearings for the driving-shaft B, which isy provided with two cranks, O C. These cranks connect by pitrnen D D each with one ot' the plungers E E', which work in separate chambers F F', and said cranks are placed in opposite directions, so that if one of the plungers moves in the other moves out, and vice versa. The connection between the pluugers E E and the pitmen D D is effected by means ot crossheads G G', to which the shanks or rods of the plungers are rigidly connected, and,in order to reduce the friction, rollers a are inserted between the cross-heads and their guides, as shown in Fig. l.

The chambers F F' are firmly secured to the frame A, and they communicate through apertures b with thointerior of the box H, in which the clay is mixed by the action of the mixer I. This mixer consists of a series ot' arms which are cast separate, each being provided with a hub, by means ot' which it can be secured to the vertical arbor J. By making the arms one independent ot' the other each arm can be readily taken out and sharpened or repaired, or, if necessary, replaced byI another, and the necessity of throwing away the entire mixer, ifone ot' the arms should be broken, is avoided. The mixer I receives its motion by the action of a bevel-wheel, d, on the main shaft, which gears ina pinion, e, on anintermediate oblique shaft, f, and from this shaft motion is transmitted to the mixer by a bevel-gear, g 7L, as shown in Fig. l. The clay, after having been deposited in one ot' the chambers F or F', is forced by the action ot' the appropriate plunger through the openings Iz' in thefrontor end plate, K. rIhese openings` are made to correspond to the transverse section of the tile to be produced, and their coresj are held in position by bridgebars k, secured on the inner surface ot' the end plate, as shown in Figs. l and 3. Said bridgebars are placed edgewise, and thereby the clay after having passed them is enabled to close up again, and the tiles on passing from the apertures present a smooth and unbroken surface. y

The end plate, K, is made movable, and it is held iu place by hooks lor other suitable fastenings. By removing the end plate access paratively little power, and a large quantity can be had to the chambers F F whenever it crank, substantially as and for the purpose set may be desirable. forth.

By this machine tiles can be made with com- 2. Casting the arms of the mixer separate, each with its distinct hub, substantially as and for the purpose described.

THOMAS A. COLLINS.l JOSIAH D. EVANS. THOMAS J. SMEDLEY.

of work is effected Without putting the working parts to a severe strain.

We claim as new and desire to secure by Letters Patent- 1. The use in a tile-machine of two plun gers, each operating in a separate chamber which communicates With the mixing-box, said plungers bein g applied in combination with a double Witnesses:

JOHN E. PHILLIPS, GEO. D. STEVENsoN. 

